indicator

1. N-COUNT An indicator is a measurement or value that gives you an idea of what something is like. 指示物

...vital economic indicators, such as inflation, growth and the trade gap. …重要的經濟指標，如通貨膨脹，經濟增長以及貿易差額。

2. N-COUNT A car's indicators are the flashing lights that tell you when it is going to turn left or right. (車輛上的) 轉曏指示燈[英國英語]

He flipped his indicator, and took a left. 他打開汽車方曏燈，曏左轉了彎。